I saw the 8MB one about 7 years ago, and now you cannot find out any 256MB pen drive in the market.
I think I understand why you need a 32MB. I myself got one pen drive of 64MB that I have been using for 5 years, one of 1GB, but in fact, I love to use the old 64MB although it is USB-1.1 compatible only.
Are you able to utilize all the 32GB memory? I got one 32GB Pen Drive from China; its look like can utilized all the 32GB memory. Even the formatting the drive also can't perform well.
But the 80GB flash drive (solid state drive, which is used in the PC instead the conventional harddrive), that is similar with pendrive in construction, is already launched to the market. The smaller, 20GB drive will be popular very soon.